Index: tests/info-variable.test
===================================================================
diff -u -N -r275da34d3d7a874a451eced58242b738c8a37d1a -r2f921800dfd3c92bfa176f9d00f366bfc9341da1
--- tests/info-variable.test	(.../info-variable.test)	(revision 275da34d3d7a874a451eced58242b738c8a37d1a)
+++ tests/info-variable.test	(.../info-variable.test)	(revision 2f921800dfd3c92bfa176f9d00f366bfc9341da1)
@@ -51,6 +51,15 @@
   #? {Person info parameter syntax age:integer} "/age/"
   #? {Person info parameter syntax -force:switch} "?-force?"
   #? {Person info parameter name "a b"} "a"
+
+  set emsg [string cat \
+                "wrong # of elements in parameter definition. " \
+                "Should be a list of 1 or 2 elements, but got: ''"]
+
+  foreach subcmd {default syntax type list name} {
+    ? [list nsf::parameter::info $subcmd ""] $emsg
+  }
+  
   ? {nsf::parameter::info syntax age:integer} "/age/"
   ? {nsf::parameter::info syntax -force:switch} "?-force?"
   ? {nsf::parameter::info name "a b"} "a"